package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.AbstractWrapper;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /*  员工登录 */

    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        // 1.将页面提交的密码进行加密
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        // 2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        // 3.如果没有对应用户就返回失败
        if(emp == null){
            return R.error("登录失败");
        }

        // 4.进行密码比对
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        // 5.查看员工状态是否被禁用了
        if(emp.getStatus() == 0){
            return R.error("员工账户被禁用");
        }

        // 6.登录成功，将员工id存入session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }


    // 书写退出登录功能
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        // 清除session中的员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }


    // 新增员工
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工，员工信息：{}",employee.toString());

        // 加密设置密码
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        // employee.setCreateTime(LocalDateTime.now());
        // employee.setUpdateTime(LocalDateTime.now());

        // 获得当前用户id
        // Long empId = (Long)request.getSession().getAttribute("employee");
        // employee.setCreateUser(empId);
        // employee.setUpdateUser(empId);

        employeeService.save(employee);
        return R.success("新增员工成功");
    }

//    // 员工信息分页查询
//    @GetMapping("/page")
//    public R<Page> page(int page ,int pageSize,String name){
//        log.info("page = {}, pageSize = {}, name = {}",page,pageSize,name);
//        // 构造分页构造器
//        Page pageInfo = new Page(page,pageSize);
//        // 构造条件构造器
//        LambdaQueryWrapper queryWrapper = new LambdaQueryWrapper();
//        // 添加过滤条件
//        queryWrapper.like(!StringUtils.isEmpty(name), Employee::getName, name);
//        // 添加过滤条件
//        queryWrapper.orderByDesc(Employee::getUpdateTime);
//        // 查询
//        employeeService.page(pageInfo,queryWrapper);
//        return R.success(pageInfo);
//    }

    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page = {},pageSize = {},name = {}" ,page,pageSize,name);

        //构造分页构造器
        Page pageInfo = new Page(page,pageSize);

        //构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper();
        //添加过滤条件
        queryWrapper.like(!StringUtils.isEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //执行查询
        employeeService.page(pageInfo,queryWrapper);

        return R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());

        long id = Thread.currentThread().getId();
        log.info("当前线程id为：{}",id);

        /*Long empId = (Long)request.getSession().getAttribute("employee");
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(empId);*/
        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }

}
